Alignment of predicted dioxygenase proteins. Dark shading
indicates amino acid residues that are conserved in the GA 20-oxidases.
GenBank accession numbers are: pea, PsGA20ox, PSU58830;
Arabidopsis, AtGA20ox, AAC39314; wheat, TaGA20ox,
TAY14007; rice, OsGA20ox1, U50333; OsGA20ox2, AY114310; OsGA3ox,
AB056519; AtGA2ox, AJ132435. Arrow indicates the highly conserved
leucine residue.